Microsoft Office Alternative
I have been using OneNote few months. Nice little app has been doing its job, but with increasing number of my notes I decided to move them to Excel. Unfortunately, I can edit Excel sheet only on my tablet (screen size smaller than 10.1"), but not on my PC. That's what I call universal app :) Nevermind, I waved a farewell to Office and installed LibreOffice and because I wasn't happy with OneDrive chaotic sync too I installed Google Drive and I hope for better sync.
Editing file in LibreOffice creates additional file starting with ".~lock." so other machines know that file is opened somewhere else. When I finish with editing my document, lock file is removed, but it takes a while to sync it automatically with Google Drive, especially on Windows 10.